[1] Davita, Nephrol, Lisbon, Portugal
[2] Davita, Nephrol, Porto, Portugal
[3] Davita Int, Nephrol, Amsterdam, Netherlands
[4] Davita Poland, Nephrol, Wroclaw, Poland
[5] Med Univ, Dept Nephrol Transplant, Bialystok, Poland
[6] Karolinska Inst, Danderyd Univ Hosp, Dept Nephrol, Stockholm, Sweden
[7] Heinrich Heine Univ, Nephrol Klin, Dusseldorf, Germany
[8] King Saud Univ, Med, Riyadh, Saudi Arabia
[9] MVZ DaVita Rhein Ruhr, Nephrol, Essen, Germany
[10] MVZ Davita Rhein Ruhr, Nephrol, Dusseldorf, Germany
[11] Sao Joao Hosp Ctr, Sch Med Univ, Dept Nephrol, Porto, Portugal